public void TestForExample()
{
int[] expectedFactorial = new int[] { 3, 6, 2, 8, 8, 0, 0 };
int[] factorial = ArrayMath.Factorial(10);
Assert.AreEqual(expectedFactorial, factorial);
}
public override long Solution()
{
int[] factorial = ArrayMath.Factorial(100);
long sum = 0;
foreach (int digit in factorial)
{
sum += digit;
}
return(sum);
}